With the advance of certain technologies, we will soon be living in an era in which it will be very difficult, if not impossible, to lie. An app for facial micro-expression recognition—to reveal your interlocutor’s emotions—will soon be available for Google Glass, and another app that makes use of similar technology to distinguish fake from true emotional expressions—that is, to tell whether you are lying—is already being tested. Norberto Andrade, in an article in The Atlantic details some of the technology and some reasons to be concerned about it. They say you don’t know the value of what you have until it’s gone. That that saying may be applicable to lying, given lying’s status in the history of moral philosophy, is very interesting.